Fully Automatic Dual-Plate Thermal Conductivity Tester (Guarded Hot Plate Method)

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Fully Automatic Dual-Plate Thermal Conductivity Tester (Guarded Hot Plate Method) is a precision instrument designed for thermal conductivity measurement of homogeneous and heterogeneous board materials. Based on unidirectional steady-state heat transfer principles, the instrument measures heat flux through the sample, the temperature difference between the upper and lower surfaces, and the sample thickness to calculate thermal conductivity.

Thetesteris fully computer-controlled and automates all testing and data processing, ensuring high accuracy and reproducibility. It is suitable for both solid boards and loose, granular, or soft materials when used with appropriate sample fixtures.

Application

This testeris suitable for testing the thermal conductivity of:

Plastics, rubber, glass, and fiber boards

Polystyrene foam (EPS), extruded polystyrene foam (XPS), polyurethane rigid foam

Foamed concrete, hollow glass, wood boards

Various insulation materials

Granular, loose, or soft materials (with optional fixtures)

Typical applications include:

Quality inspection of insulation and construction materials

R&D in thermal performance of polymer and foam materials

Academic research in thermal properties of solid and granular samples

Industrial production control for plastics, foams, and composite boards

Standards

The instrument complies with the following international and national standards:

GB/T 10294-2008 – Determination of Steady-State Thermal Resistance and Related Properties of Insulating Materials

GB/T 3399-1982 – Test Method of Thermal Conductivity for Plastics by Guarded Hot Plate Method

GB/T 10801.1-2002 – Measurement of Thermal Conductivity for Polyurethane Rigid Foam in Thermal Insulation

GB/T 10801.2-2002 – Measurement of Thermal Conductivity for Extruded Polystyrene Foam (XPS)

GB/T 3139-2005 – Test Method of Thermal Conductivity for Fiber Reinforced Plastics

GB/T 17794-2008 – Flexible Foam Rubber and Plastic Thermal Insulation Products

Parameters

Item	Specification
Thermal conductivity range	0.001–3.000 W/m·K
Measurement accuracy	±2%
Repeatability	±1%
Hot plate temperature range	Room temperature–150 °C (standard); optional up to 300 °C
Hot plate resolution	0.01 °C
Cold plate temperature range	0–60 °C (standard); optional -5–60 °C
Cold plate resolution	0.01 °C
Sample thickness	0–100 mm; resolution 0.001 mm; automatic measurement
Applied pressure	0–500 N; resolution 0.1 N
Sample size	300×300×(5–50) mm (standard); custom sizes available
Automation	Fully computer-controlled testing and data processing
Test duration	60 minutes
Power supply	220 V / 50 Hz; 500 W

Features

Online temperature calibration: Unique technology allows fast, accurate calibration, improving accuracy by over 3 times.

Reduced testing time: Full testing completed in approximately 60 minutes.

Wide measurement range: Thermal conductivity 0.001–3.000 W/m·K.

Automatic thickness measurement: Computer-controlled, minimizing human error.

Automatic pressure control: Accurate, reproducible testing under varying pressures.

Versatile measurement: Supports solid boards and, with optional accessories, granular and loose materials.

Fully automated system: From measurement to data analysis and report output.

Accessories

Main instrument

Analysis software (Chinese & English versions)

HX-1005 precision low-temperature constant temperature water bath (0.01 °C accuracy)

Desktop computer (user-selected)

Calibration reference sample

Test Procedures

Prepare the sample according to size and thickness specifications. For loose or granular materials, use the optional sample fixture.

Place the sample between the hot and cold plates.

Set hot and cold plate temperatures via software.

Apply desired pressure using the computer-controlled automatic system.

Start the measurement; the system records temperature gradients and sample thickness automatically.

Wait for the completion of testing (approx. 60 minutes).

Software calculates thermal conductivity and generates data reports.

Maintenance Information

Keep hot and cold plates clean and free from residues.

Periodically calibrate using reference samples.

Inspect the pressure system and thickness sensors to ensure proper operation.

Maintain a stable laboratory environment to reduce measurement errors.

Ensure proper operation of the water bath for consistent cold plate temperature.

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